BMR Calculator

Calculate Basal Metabolic Rate and resting calories.

How to Do It Manually

BMR (Basal Metabolic Rate) is the number of calories your body burns at rest. It's based on age, sex, height, and weight.

Mifflin-St Jeor: BMR = (10 × weight in kg) + (6.25 × height in cm) − (5 × age in years) + 5 (males) or −161 (females)
  1. Enter your age, sex, height, and weight.
  2. Apply the Mifflin-St Jeor formula specific to your sex.
  3. The result is your daily calorie burn at rest.

Frequently Asked Questions

What affects BMR?

Age, sex, muscle mass, genetics, and hormones all affect BMR. Muscle burns more calories than fat.

Is BMR the same as metabolism?

BMR is your resting metabolism. Total metabolism includes activity and digestion too.